Common Name(s): Myo-inositol,cyclohexanehexol,vitamin bh

CAS Number: 87-89-8

DESCRIPTION

What It Does: Provides nmf humectant conditioning and phosphoinositide precursor support.

Why It's Used: Comprehensive bio-identical cellular nutrient providing humectant, hair strengthening, and cell signalling lipid precursor from a naturally occurring cyclitol.

How It Works: 6 hydroxyl groups provide strong humectant water binding. phosphatidylinositol precursor for cell signalling lipid synthesis. hair penetration study shows inositol reduces breakage by >25%. ip3 secondary messenger pathway support.

Typically Found In: Hair strengthening products,moisturisers,scalp treatments

TECHNICAL DETAILS

Primary Category: Functional ingredient – humectant

Secondary Functions: Tewl reduction,skin plumping

Application Areas:

Typical Concentration Range: 0.5%–5%

SOURCING & ETHICS

Vegan Status: Conditional - supplier confirmation required

Halal Status: Unverified - supplier confirmation required

Source Notes: Synthetic or naturally derived. excellent aqueous solubility. [audit 2026-07-29 rev2: status downgraded on audit. determination requires shariah-panel sign-off.]

SKIN COMPATIBILITY

Irritancy Rating: 1/5 – very low

Comedogenicity Rating: 0/5 – non-comedogenic

Sensitivity Concerns: Non-irritating; suitable for all skin types.

Safe for Sensitive Skin: Yes

SAFETY & COMPATIBILITY

Safety Profile: Excellent safety profile. ewg score: 1.

Works Well With: Ceramides,emollients,occlusives,glycerin,hyaluronic acid

Avoid Combining With: No significant incompatibilities

SCIENTIFIC NOTE

Myo-inositol's hair strengthening evidence from in vitro breakage studies shows inositol-treated hair has significantly reduced breakage under tension — a structural rather than surface-coating strengthening mechanism via integration into hair cortex protein interactions.

Last Verified: 2026-03-12

Primary Sources: Cosing database,cir safety assessment